var div_showing = 'signpost_image_one';
function swap_divs(div_to_hide, div_to_unhide)
{
	if(div_to_hide == div_showing)
	{
	document.getElementById(div_to_hide).style.visibility = "hidden";
	}
	else
	{
	document.getElementById(div_showing).style.visibility = "hidden";
	}
//window.alert("in " + div_to_hide);
debug("in " + div_to_hide);
//document.getElementById(div_to_hide).style.display = "none";
//document.getElementById(div_to_unhide).style.display = "block";
debug("out " + div_to_unhide);
//window.alert("out " + div_to_unhide);
//document.getElementById(div_to_hide).style.visibility = "hidden";
document.getElementById(div_to_unhide).style.visibility = "visible";
//reload();
	div_showing = div_to_unhide;
}